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Frequently Bought Together

Product Overview

Combination Smoke and CO detector requires hardwire installation

10-year battery back-up for protection against power outages

All interconnected alarms will sound when one alarm goes off

NEW Worry Free Kidde 120 Volt Hardwired-Interconnected 10 Year Combination Smoke and Carbon Monoxide Alarm . The alarm is suitable as a single station and/or multiple station (24 devices) alarm. This alarm contains a ten-year lithium battery backup, removing the need to replace batteries in a hardwired unit and carries a limited 10 year warranty.

120 volt AC

10 Year Sealed 3V lithium battery backup

Test/hush button

Voice Warning

Peak level CO memory

Combination Smoke and Carbon Monoxide Detector

Contains Ionization Sensor

Interconnected

Kidde offers a full range of 120V AC wire-in life safety products with interconnect capability to provide the most immediate and complete system available. When any one interconnected alarm is triggered, all interconnected alarms within the home sound an immediate warning.

NEW Worry Free Kidde 120 Volt Hardwired-Interconnected 10 Year Combination Smoke and Carbon Monoxide Alarm . The alarm is suitable as a single station and/or multiple station (24 devices) alarm. This alarm contains a ten-year lithium battery backup, removing the need to replace batteries in a hardwired unit and carries a limited 10 year warranty.

120 volt AC

10 Year Sealed 3V lithium battery backup

Test/hush button

Voice Warning

Peak level CO memory

Combination Smoke and Carbon Monoxide Detector

Contains Ionization Sensor

Interconnected

Kidde offers a full range of 120V AC wire-in life safety products with interconnect capability to provide the most immediate and complete system available. When any one interconnected alarm is triggered, all interconnected alarms within the home sound an immediate warning.

Warranty / Certifications

Certifications and Listings

1-UL Listed

Questions & Answers

How many wires in connector 2 or 3?

Product Title, Description, &amp; Specs state this unit is &quot;Hard-wired&quot;, however Specs then list the &quot;Connector Type&quot; as &quot;None&quot;.
Does this unit have 2-wire or 3-wire connection?

Asked by: kim

3

Answered by: Boomer

Date published: 2017-05-30

What type of smoke detector is in this unit....ionization or photoelectric?

Asked by: ALinNC

CAUTION: MASSACHUSETTS requires a photoelectric alarm in all residential situations. This ionization device has limited use in MA and in the few situations where it could be installed, it would need a photoelectric alarm mounted next to it.

Answered by: wsfdgreen

Date published: 2017-03-27

can the battery be changed??

after ten years

Asked by: john

Not without breaking open the unit and voiding the warranty. Sealed unit is not designed for user battery replacement. Battery life &gt; 10 years and built-in warranty timer means you should never have to replace the battery for the useful warranted life of the unit (10 years).

Answered by: MechMan

Date published: 2017-08-31

I have a 2 story colonial which is hardwired with regular smoke dectectors on all levels. One in basement, one on main floor and one in each room

upstairs as well as the hallway upstairs. How many smoke and co detectors are necessary in this design? And can the Kidde worry free be installed where I now have BRK Electronics model 4120B?

Asked by: bigJim

I replaced all three of mine with the the hard wired combination smoke and co alarm with voice and ten year lithium battery. No more night time beeps when the
9 volt expires!

Customer Reviews

Rated 4 out of
5 by
BasementJesus from
Worked as expected. Keep in mind that after install it will chirp low battery for about 20 minut...Worked as expected. Keep in mind that after install it will chirp low battery for about 20 minutes before going quiet. Works with all of my other Kidde detectors in my home.

Date published: 2017-09-05

Rated 5 out of
5 by
Kassle from
Often, DIY folks post that some item was easy-breezy to install, but I found the same item often ...Often, DIY folks post that some item was easy-breezy to install, but I found the same item often takes me 10 times longer or longer to install. However, this Kidde Hardwired Smoke & Carbon Monoxide Alarm was actually easy-breezy to install, replacing an existing Kidde Hardwired Smoke Alarm in my home. The smoke & carbon alarm integrated with my home alarm system, which used the same plug. Weekly tests of the alarm system are quick and easy with a press of the smoke & carbon alarm test button. The digital verbal warning is clear and loud. BTW, I always wear hearing protection when testing audio alarms.

Date published: 2017-05-16

Rated 1 out of
5 by
Brokenoob from
I guess I should have read the reviews first, although as many others have stated this is the onl...I guess I should have read the reviews first, although as many others have stated this is the only combination hardwired, smoke and CO2 with battery backup. Unfortunately I've now wasted my time twice with low battery issues when delivered installed new. Based on all the feedback Kidde really needs to do something about either their engineering or quality control because this is ridiculous. Seriously, they've had the same issues since 2015 and they are still happening? I'm supposed to trust these in a fire when they can't even deliver them functioning.

Date published: 2017-04-27

Rated 5 out of
5 by
TheOldHandyman from
Easy to install as new or replacement for other Kidde smoke detectors. The idea of no battery re...Easy to install as new or replacement for other Kidde smoke detectors. The idea of no battery replacement is very attractive. I have had problems with tenants replacing the batteries on earlier Kidde products and ruining the detector in the process. This model eliminates this problem. Nice that that this detector gives a warning when it is time for replacement. Great improvement.

Date published: 2017-09-12

Rated 5 out of
5 by
Quadrivium from
I was able to easily install this item, it's working...I was able to easily install this item, it's working perfectly. My wife has already tested out the alarm a couple times,LOL. That lets me know the old one wasn't working well! I like the voice telling what type of alarm it is, and was able to silence it easily when it was a false alarm.

Date published: 2017-07-04

Rated 4 out of
5 by
Anonymous from
The product is excellent. I purchased 5. However, the store stocking/restocking process needs a ...The product is excellent. I purchased 5. However, the store stocking/restocking process needs a lot of work. After two trips to the store for a missing part (electrical pigtail connection) on the third trip I had to open five boxes to find one that had the missing part.

Date published: 2017-06-20

Rated 4 out of
5 by
jbltg from
So far, so good. Installs easily and seems to test very well, time will tell on the battery life...So far, so good. Installs easily and seems to test very well, time will tell on the battery life and trouble-free operation. I have the smoke-only versions now for about two years and they have been fine. No disturbances or effort needed beyond periodic testing.

Date published: 2017-07-25

Rated 4 out of
5 by
Bruno from
LikeI got two with co2 sensors and three regular smoke detectors. They are hardwired with 10 year batteries. Easy to install and I like the fact that they are in line. One goes off they all do. Kidde customer service department could use some work though.

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